The following table provides summary statistics for permanent job vacancies with a requirement for JNI skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited JNI over the 3 months to 27 June 2017 with a comparison to the same period in the previous 2 years.

Java Native Interface (JNI)
UK
3 months to
27 Jun 2017
Same period 2016 Same period 2015
Rank 872 904 962
Rank change year-on-year +32 +58  
Permanent jobs citing JNI 18 28 20
As % of all permanent IT jobs advertised in the UK 0.020% 0.028% 0.018%
As % of the Libraries, Frameworks & Software Standards category 0.049% 0.073% 0.048%
Number of salaries quoted 12 25 18
Median salary £40,000 £70,000 £80,000
Median salary % change year-on-year -42.85% -12.50%  
UK excluding London median salary £40,000 £70,000 £55,000
% change year-on-year -42.85% +27.27%  

JNI is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies with a requirement for industry standards, technical specifications and software library and framework skills.

Software Library & Framework Skills
UK
Permanent job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 36421 38335 41712
As % of all permanent IT job vacancies advertised in the UK 40.85% 38.93% 38.12%
Number of salaries quoted 30573 33333 35674
Median salary £47,500 £45,000 £45,000
Median salary % change year-on-year +5.55% -  
90% offered a salary of more than £32,500 £31,000 £30,000
10% offered a salary of more than £70,000 £65,000 £70,000
UK excluding London median salary £42,500 £40,000 £40,000
% change year-on-year +6.25% -  

JNI
Job Vacancy Trend

The job posting trend of jobs advertised citing JNI as a proportion of all permanent or contract IT jobs with a match in the Libraries, Frameworks & Software Standards category.

Job vacancy trend for JNI in the UK

JNI
Salary Trend

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing JNI.

Salary trend for JNI in the UK

JNI
Top 16 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing JNI within the UK over the 3 months to 27 June 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +37 17 £40,000 -42.85% 1
London +34 13 £40,000 -50.00% 1
East of England -12 2 £38,750 -
South East - 2 £43,750 -
South Wales +18 1 £40,000 +14.28%
Bridgend +15 1 £40,000 +14.28%
Wales +3 1 £40,000 +14.28%
Cambridgeshire -22 1 £40,000 -
Hertfordshire - 1 £37,500 -
City of London - 1 - -
Peterborough - 1 £40,000 -
Uckfield - 1 £45,000 -
Watford - 1 £37,500 -
Haywards Heath - 1 £42,500 -
East Sussex - 1 £45,000 -
West Sussex - 1 £42,500 -

For the 6 months to 27 June 2017, IT jobs citing JNI also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads with a requirement for JNI.

1 20 (100.00%) C++
2 19 (95.00%) Java
3 16 (80.00%) C
4 10 (50.00%) Linux
5 9 (45.00%) Android
6 8 (40.00%) Apple iOS
6 8 (40.00%) SDLC
7 7 (35.00%) Software Engineering
8 6 (30.00%) ION Trading
8 6 (30.00%) Equities
8 6 (30.00%) Foreign Exchange (FX)
8 6 (30.00%) Low Latency
8 6 (30.00%) Git (software)
8 6 (30.00%) ION MarketView
8 6 (30.00%) Multithreading
8 6 (30.00%) Electronic Trading
9 5 (25.00%) Bluetooth
9 5 (25.00%) EMV
9 5 (25.00%) Smartcard
9 5 (25.00%) C#
10 4 (20.00%) HTML
10 4 (20.00%) SQL
10 4 (20.00%) EPoS
10 4 (20.00%) Windows
10 4 (20.00%) Embedded C
10 4 (20.00%) Embedded C++
10 4 (20.00%) Objective-C
10 4 (20.00%) Computer Science
10 4 (20.00%) Degree
10 4 (20.00%) JIRA

JNI
Co-occurring IT Skills by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 2 (10.00%) JBoss
1 2 (10.00%) WildFly
Business Applications
1 6 (30.00%) ION MarketView
Cloud Services
1 1 (5.00%) Google Play
Communications & Networking
1 5 (25.00%) Bluetooth
2 2 (10.00%) SSH
2 2 (10.00%) VoIP
3 1 (5.00%) Broadband
3 1 (5.00%) SMS
Database & Business Intelligence
1 2 (10.00%) Geospatial Data
1 2 (10.00%) GIS
Development Applications
1 6 (30.00%) Git (software)
2 4 (20.00%) JIRA
3 3 (15.00%) Gradle
4 1 (5.00%) Android Studio
4 1 (5.00%) Jenkins
4 1 (5.00%) Subversion
General
1 2 (10.00%) Finance
1 2 (10.00%) Games
1 2 (10.00%) Military
2 1 (5.00%) Advertising
2 1 (5.00%) Banking
Job Titles
1 13 (65.00%) Developer
2 9 (45.00%) Java Developer
3 6 (30.00%) Electronic Trading Developer
3 6 (30.00%) Electronic Trading Java Developer
3 6 (30.00%) Software Engineer
4 4 (20.00%) C Software Engineer
4 4 (20.00%) C/C++ Embedded Software Engineer
4 4 (20.00%) C/C++ Software Engineer
4 4 (20.00%) C++ Software Engineer
4 4 (20.00%) Embedded C Engineer
4 4 (20.00%) Embedded C Software Engineer
4 4 (20.00%) Embedded C/C++ Engineer
4 4 (20.00%) Embedded C/C++ Software Engineer
4 4 (20.00%) Embedded C++ Engineer
4 4 (20.00%) Embedded C++ Software Engineer
4 4 (20.00%) Embedded Engineer
4 4 (20.00%) Embedded Linux Engineer
4 4 (20.00%) Embedded Linux Software Engineer
4 4 (20.00%) Embedded Software Engineer
4 4 (20.00%) Linux Engineer
Libraries, Frameworks & Software Standards
1 4 (20.00%) HTML
2 3 (15.00%) Java EE
3 2 (10.00%) .NET
3 2 (10.00%) AngularJS
3 2 (10.00%) Apache Flex
3 2 (10.00%) CSS
3 2 (10.00%) HTML5
3 2 (10.00%) React
3 2 (10.00%) REST
3 2 (10.00%) Web Services
3 2 (10.00%) XMPP
4 1 (5.00%) Android SDK
4 1 (5.00%) EJB
4 1 (5.00%) Hibernate
4 1 (5.00%) JPA
4 1 (5.00%) JSF
4 1 (5.00%) JSON
4 1 (5.00%) Spring
4 1 (5.00%) XHTML
4 1 (5.00%) XML
Miscellaneous
1 6 (30.00%) Equities
1 6 (30.00%) Foreign Exchange (FX)
2 5 (25.00%) EMV
2 5 (25.00%) Smartcard
3 4 (20.00%) Computer Science
3 4 (20.00%) EPoS
4 3 (15.00%) Mobile App
5 1 (5.00%) Contactless
5 1 (5.00%) Mobile Games
5 1 (5.00%) User Experience
Operating Systems
1 10 (50.00%) Linux
2 9 (45.00%) Android
3 8 (40.00%) Apple iOS
4 4 (20.00%) Windows
Processes & Methodologies
1 8 (40.00%) SDLC
2 7 (35.00%) Software Engineering
3 6 (30.00%) Electronic Trading
3 6 (30.00%) Low Latency
3 6 (30.00%) Multithreading
4 4 (20.00%) Mobile Development
5 3 (15.00%) Mathematics
5 3 (15.00%) MVC
6 2 (10.00%) Agile Software Development
6 2 (10.00%) Android Development
6 2 (10.00%) Continuous Delivery
6 2 (10.00%) Scrum
6 2 (10.00%) Secure Coding
6 2 (10.00%) TDD
7 1 (5.00%) 3D Programming
7 1 (5.00%) Continuous Integration
7 1 (5.00%) Game Development
7 1 (5.00%) iOS Development
7 1 (5.00%) Test Scripting
7 1 (5.00%) Time Management
Programming Languages
1 20 (100.00%) C++
2 19 (95.00%) Java
3 16 (80.00%) C
4 5 (25.00%) C#
5 4 (20.00%) Embedded C
5 4 (20.00%) Embedded C++
5 4 (20.00%) Objective-C
5 4 (20.00%) SQL
6 3 (15.00%) Bash Shell
6 3 (15.00%) JavaScript
7 2 (10.00%) ActionScript
7 2 (10.00%) Groovy
8 1 (5.00%) Apple Swift
8 1 (5.00%) PHP
Qualifications
1 4 (20.00%) Computer Science Degree
1 4 (20.00%) Degree
2 2 (10.00%) Security Cleared
Vendors
1 6 (30.00%) ION Trading
2 3 (15.00%) Google
3 1 (5.00%) Apple
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